TY - GEN AU - McAllister, Therese P C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2017-05-01 04:05:00 DO - https://doi.org/10.6028/NIST.SP.1190GB-7 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2017 TI - Guide Brief 7: defining communities: ER -